running into sinking air with a possibility of light rain. in san francisco, dress for 47 degrees. oakland at 44. san jose, down in the south bay, 41. on the peninsula, palo alto, at 40. the north bay, mill valley, has 42 degrees. here is what will happen with the forecast cycle, more cloud cover than yesterday, and darker clouds, too, because they will have more moisture, and showers are on the increase during the afternoon and evening hours. dry air arrives tomorrow and another extended period of warm, dry weather and i don't see another chance of rain, possibly seven or eight or nine days out with temperatures above average for several days. >> our last low will rotate through this low pressure and the big bowl of cold air sitting over us so the last round pushing through today.